Brown the butter

• Melt the butter in a saucepan over medium heat.
• Keep cooking until the milk solids turn golden brown and it smells nutty.
• Pour into a bowl and let cool slightly.

Make the cookie dough

• Whisk the browned butter with the sugar and brown sugar until smooth.
• Beat in the egg.
• Add the flour, baking soda and salt and mix into a soft dough.
• Fold in the M&Ms.

Chill the dough

• Cover the dough and chill so the cookies spread less.

Shape the cookies

• Scoop balls of dough onto a lined baking tray.
• Press a few mini M&Ms on top of each ball.

Bake

• Bake at 175 °C until the edges are set and the centres still soft.
• Let cool on the tray for a few minutes before moving.